The Loch Ness Monster (Scottish Gaelic Niseag) is a cryptid that is reputed to inhabit Loch Ness in the Scottish Highlands. The most frequent speculation is that the creature represents a line of long-surviving plesiosaurs. It is similar to other supposed lake monsters in Scotland and elsewhere, though its description varies from one account to the next. Popular interest and belief in the animal has varied since it was brought to the world's attention in 1933. Evidence of its existence is anecdotal, with minimal and much-disputed photographic material and sonar readings. The scientific community regards the Loch Ness Monster as a modern-day myth, and explains sightings as a mix of hoaxes and wishful thinking. Despite this, it remains one of the most famous examples of cryptozoology. The legendary monster has been affectionately referred to by the nickname Nessie (Scottish Gaelic: Niseag) since the 1950s.
The term "monster" was reportedly applied for the first time to the creature on 2 May 1933 by Alex Campbell, the water bailiff for Loch Ness and a part-time journalist, in a report in the Inverness Courier. On 4 August 1933, the Courier published as a full news item the claim of a London man, George Spicer, that a few weeks earlier while motoring around the Loch, he and his wife had seen "the nearest approach to a dragon or pre-historic animal that I have ever seen in my life", trundling across the road toward the Loch carrying "an animal" in its mouth.